高性能Ce_(0.35)Zr_(0.55)Y_(0.1)O_(1.95)稀土储氧材料的研究  

High Performance Ce_(0.35)Zr_(0.55)Y_(0.1)O_(1.95) Rare Earth Oxygen Storage Material

作　　者：毛小波[1] 陈耀强[1] 龚茂初[1] 

机构地区：[1]四川大学化学学院,成都610064

出　　处：《无机化学学报》2006年第8期1521-1524,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金资助项目(No.20273043);国家重点基金资助项目(No.20333030)

摘　　要：The oxygen storage material (OSM) Ce0.35Zr0.55Y0.1O1.95 was prepared by co-precipitation routine and studied by means of TEM, XRD, XPS, BET, H2-TPR and oxygen storage capacity (OSC) measurements. The results indicated that this material possessed plenty of Ce3+ and lattice oxygen vacancy (percentage of Ce3+ was 59.6%) and high cerium atom utilization ratio (80.04%). The porous material was with an average BET surface area of 97 m2·g-1 and pore volume of 0.26 mL·g-1. After aged at 1 000 ℃ in air for 5 h, the sample still possessed plenty of Ce3+ and lattice oxygen vacancy (percentage of Ce3+ was 57.1%), and showed high cerium atom utilization ratio (78.25%), and high thermal stability.The oxygen storage material （OSM） Ce0.35Zr0.55Y0.1O1.95 was prepared by co-precipitation routine and studied by means of TEM, XRD, XPS, BET, H2-TPR and oxygen storage capacity （OSC） measurements. The resuhs indicated that this material possessed plenty of Ce^3＋ and lattice oxygen vacancy （percentage of Ce^3＋ was 59.6%） and high cerium atom utilization ratio （80.04%）. The porous material was with an average BET surface area of 97 m^2· g^-1 and pore volume of 0.26 mL·g^-1. After aged at 1 000 ℃ in air for 5 h, the sample still possessed plenty of Ce3＋ and lattice oxygen vacancy （percentage of Ce^3＋ was 57.1%）, and showed high cerium atom utilization ratio （78.25%）, and high thermal stability.

关 键 词：程序升温还原(H2-TPR) 储氧材料(OSM) 储氧量(OSC) 铈原子利用率 

分 类 号：O614.412[理学—无机化学] O614.332[理学—化学]